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.Reissued Dec. 23, 1924.

UNITED STATES- v PATENT OFFICE.

WILL N. SERUM, OF DALLAS, TEXAS, ASSIGNOB, BY MESNE 4SSIGNMENTS, TO

-monnnn cnnmcn'n MANUFACTURING courm.

ANTILEAK COMPOSITION.

No Drawing. Original application filed January 16, 1919, Serial No. 271,517. Renewed January 2 1, 1921, Serialli'o. 439,053. Original No. 1,383,572, dated July 5, 1921. Application tor reissue Med January 27, 1923. Serial Nb. 615,368.

To all whom it may concern:

Be it known that I, WILL N. SHRUM,a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented a certain new and useful Improvement in Antileak Compost tions, of which the following is a speclfication.

This. invention relates to a preparation for, stopping and preventing leaks in radiators, water pipes, boilers and other liquid holding vessels, or containers. 'While the main object of the invention is to revent water escaping from leaks already ormed, the preparation can be, as in the case of radiators, placed in the water before any leak is detected, and will automatically prevent any leak from showing up by stopping any puncture as soon as it becomes of sufli the resin later as oxidation takes place.

cient size to permit water to enter it.

In testing the composition I have found that considerable care is re uired to get just the right amount of some 0 the ingredients,

as the proportions employed are as important as the ingredients themselves.

In preparing ten gallons of liquid composition Itake onepound of asbestos, one and one-half pounds of dry paper, two gallons of wheat or rice paste, one-half ounce of gum arabic, one-half ounce of English rosin, one-half ounce of safrol, or any similar deodorizing agency,-one-fourth ounce of salicylic acid and one-eighth of a pintof denatured or wood alcohol. This last is employed as a solvent, especially for the resin. With the exception of the safrol, alcohol, and paste, these ingredients re finely comminuted state. To the above I add a suflicient amount of water to make up the ten gallons. I

To stopor prevent a leak a quantity of the composition is poured into the receptacle in which the leak is to be stopped or prevented; In an automobile radiator for exam le' about one quart of the solution is ad ed to the water already contained in the radiator, which will be possibly from four to five gallons. I

- As previously stated the proportions of some of the ingredients are veryimportant. If more than the amount of paper or fibrous material isused it will clog, if less is used it will fail to do the work required of it.

the outer air.

in a dry and gredients to remain in a .fluid state until the have entered the opening'to be stopped,

an to cause them to become hard, dry and impervious to water as soon as exposed to are those that exhaustive tests have proven to be most eflicient, and in preparing the solution accurate measurements should be made. 1

The vegetable pulp used in the composition described is merely a fibrous cellulosic material and paper is a convenient form in which it may be obtained. The gum and the resin are merely binders serving to cement or bind the fibrous and starchy material together, the gum becoming operative first,

The aqueous mixture consists perhaps of some materials in solution, others in sus pension but the term mixture is intended to cover the combination of the ingredients both in solution and suspension.

The operation of mycomposition in stop- .ping leaks is as follows:

to the air are subject to some kind of c emical chan e which results in their holding and bin ing the fibrous material to other into a concrete like masswhich fina y cements the plug together thus forming a chemical and physical binding to form a plug which ultimately closes the aperture and makes it water or liquid tight.

. I claim: i

1. A composition for stopping leaks in radiators, boilers, etc.,,cons1sting of finely The proportions mentioned ground a r, one and one-half pounds,

comminute asbestos, one pound, two gallons of a starchy paste, one-half ounce of" gum arabic or an equivalent gum, onehalf I ounce resin, a suitable deodorizer, one-half ounce salicylic acid, and one eighth of a.

pint of alcohol, all added to a sufiicientamount of water to 2. A composition automobile radiators, boilers, etc., com rising an aqueous mixture of finely divided fibrous material, a vegetable paste, a resin-' ous binding material, and a preservative.

3. A composition for stopping leaks in automobile radiators, boilers, etc., comprising an a ueous mixture of finely divided paper pu a vegetable paste, a resinous binder, an a solvent for the said binder.

equal ten gallons.

4. A composition for stopping leaks in automobile radiators, boilers, etc., comprisor stopping leaks in ing an aqueous mixture of finely divided fibrous material, a vegetable paste, a gum' serving as a binder, a resinous substance also serving as'a binder, and a solvent for the latter.

5. A composition for stopping leaks in automobile radiators, boilers, etc, comprising an aqueous 'mixture oi finely divided paper pulp, astarchy paste, rosin,'a solvent i for the rosin,'and a preservative.

Signed at Dallas, Texas, this 22nd day of Jan. 1923. v

. WILL N. SHRUM. Witnesses:

-E. L. Tmw'ls,

Cms. W. ULMSTEAD. 

